Totalizer control mecha



Oct. 6, 1953 2,654,53 7 IPLE H. L. LAMBERT TOTALIZER CONTROL. iECl-IANISM FOR MULT UBTRACTING MACHINES 8 Sheets-Sheet l TOTALIZER ADDING-S Filed May 27, 1949 Ennentor HARRY L. LAMBERT HIS (Ittorneg 2 ,65453 7 ULTIPLE CHINES Oct. 6, 1953 H. L. LA ERT TOTALIZER CONTROL MEC NISM FO TOTALIZER ADDING-SUBTRACTING 8 Sheets-Sheet 2 Filed May 27, 1949 Oct. 6, 1953 H. L. LAMBERT 2,654,537

TOTALIZER CONTROL MECHANISM FOR MULTIPLE TOTALIZER ADDING-SUBTRACTING MACHINES 8 Sheets-Sheet 3 Filed May 27, 1949 HIS (Ittomeg HARRY L. LAMBERT Oct. 6, 1953 LAMBERT 2,654,537

- TOTALIZER CONTROL MECHANISM FOR MULTIPLE TOTALIZER ADDING-SUBTRACTING MACHINES Filed May 27 1949 8 Sheets-Sheet 4 om m5 3nventor HARRY L. LAMBERT HIS attorney Oct. 6, 1953 L M 2,654,537

TOTALIZER CONTROL MECHANISM FOR MULTIPLE TOTALIZER ADDING-SUBTRACTING MACHINES Filed May 27, 1949 8 Sheets-Sheet 5 3maentor v LAMBERT HARRYL.

HIS (Ittorneg Oct. 6, 1953 H. L. LAMBERT 2,654,537 TOTALIZER CONTROL MECHANISM FOR MULTIPLE BTRACTING MACHINES 8 Sheets-Sheet 6 TOTALIZER ADDING-SU Filed May 27, 1949 Ihwentor HARRY L. LAMBERT HIS (Ittorneg Qct. 6, 1953 2,654,537

H. L. LAMBERT TOTALIZER CONTROL MECHANISM FOR MULTIPLE TOTALIZER ADDING-SUBTRACTING MACHINES Filed May 27, 1949 8 Sheets-Sheet 8 Zhwentor HARRY L. LAMBERT BYMM HIS Gttorneg Patented Oct. 6, 195 3 2,654,537 TOTALIZER CONTROL MECHANISM FOR MULTIPLE TOTALIZER ADDING-SUB- TRACTIN G MACHINES Harry L. Lambert, Webster, National Cash Register N. Y., assignor to The Company, Dayton,

Ohio, a corporation of Maryland Application May 27, 1949, Serial N 0. 95,703 3 Claims. (Cl. 235-6031) This invention relates to improvements in adding-subtracting machines and is particularly drawn to an arrangement for increasing the number of totalizers in such machines without a corresponding increase in size of the machine and without completely redesigning the machine.

It is an object of this invention to provide an adding-subtracting machine, which was originally built to contain one totalizer, with three totalizers without appreciably increasing its size and with a minimum of change to the mechanisms making up the machine.

A further object of the invention is to provide a novel totalizer selecting means which can select any one of a plurality of totalizers for operation and at the same time will non-add the remaining totalizers.

A further object of the invention is to provide novel means for operating a totalizer engaging means in total and sub-total taking operations.

Another object of the invention is to provide a compact totalizer arrangement in which two independently operable totalizers can be provided in a space which is substantially the same as that previously required for one totalizer.

Another object of the invention is to provide a compact dual totalizer arrangement in which a second totalizer is mounted in tandem with a first totalizer and within but independently of the supporting frame for the first totalizer.

Another object of the invention is to provide a novel control for tens transfer mechanism whereby either of two totalizers can control a single transfer mechanism to make necessary tens transfer entries in either totalizer in adding and subtracting operations.

With these and incidental objects in view, the invention includes certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings:

Fig. 1 is a vertical section through the machine, showing the mechanism associated with, and controlled by one denominational row of keys on the keyboard.

Fig. 2 is an exploded perspective view of a portion of two adjacent totalizers and their related tens transfer mechanism, showing how either of the totalizers can control the tens transfer mechanism.

. Fig. 3 is a side elevation view of the right side of the machine.

Fig. 4 is a vertical section of the machine, taken just inside the right side frame.

Fig. 5 is a perspective of a portion of two ad- J'acent totalizers and their supporting frames.

Fig. 6 is a side elevation view of the left side of the machine.

Fig. 7 is a detail view of a portion of the totalizer engaging means for the #1 totalizer and the totalizer selecting means for controlling this engaging means in the selection of the totalizers for operation.

Fig. 8 is a detail view of the engaging means for the #2 totalizer and the totalizer selecting means for controlling this engaging means in the selection of the totalizers.

Fig. 9 is a detail view of the total and subtotal lever and its control over the engaging means for the #1 and #3 totalizers.

Fig. 10 is a detail view of the means for setting a symbol type bar under control of the totalizer selecting means to enable a record of the totalizer selection to be made.

Fig. 11 is a detail view of the engaging means for the #3 totalizer and the totalizer selecting means for controlling this engaging means in the selection of the totalizers.

Fig. 12 is a plan view of a section of the #2 totalizer engaging mechanism taken along the line I 2-l 2 in Fig. 6.

Fig. 13 is a plan view of a section of the #3 totalizer engaging means taken along the line I3l3 in Fig. 3.

Fig. 14 is a plan view of a portion of the totalizer engaging means and totalizer selecting mechanism located at the right of the machine.

Fig. 15 is a view of the #1 and #2 totalizers, taken in the direction of the arrow 15 in Fig. 1, with portions of the totalizers omitted in order to show their supporting frames more clearly.

Fig. 16 is a detail view of means for controlling the engaging means for the #1 and #3 totalizers in a non-add operation.

The invention is shown embodied in an adding-subtracting machine of the type shown generally in the United States patents to Peters, Nos. 1,386,021 and 1,646,105, which issued, respectively, on August 2, 1921, and October 18, 1927, and in the United States patent to White, No. 1,854,875, which issued on April 19, 1932.

As shown in these patents, this type of machine originally was provided with but a single totalizer, which was located in the upper part of the machine substantially between the keyboard and the printing mechanism and which was differentially operated by a set of arcuate actuating racks. In order that these machines would be of 1 bars, and the'printirrg mechanism, it is practically impossible to add further similar actuating racks. and totalizers. without completely rearranging the. various-mech-. anisms of the machine.

In spite of these conditions, thenovel; arrange.-. ment can enable a further totalizer to be included in the machine without rearranging the various mechanisms of the machine. This has been. accom lished hr a tcts iizer in front of the upper tctaligzer w than pper ota izer s ppor twi t xe r t9- srhasitsvhts 1.0 m an etu with and clos ts ad a en th wheat. o q rsss nli ps denominations of the upper totalizeris en eas a le with. the. same. actu tin a h as th estert tal. bu mounted for tacit-sheath ma s ats pesssn h r at.

Suita l to l termeasles mea s s p ovided. for each totalizer to enable the total ers to be or ncasem n ith. n b -att st c a ks eve t tallzsess P- c ntr s. he. several engaging mea to'coor mate its. i. th thr e. tea. asts. an Q the ts al t R ce ve 9.1. ....1.:

. b o era e :taktns...snd ulw etalr alt ps GAY}. be nert tm t y; this: y e

ntering operations, or to s '3. @19 frame for the ii-2. a e st s. the sac ed: th t3. o the #3 totalizer will e cal Pau e ey have m la ape ata str vilih called he #2 totalizer is termed the extra totalia because s. en aging: a ie s if e n from; he n he. #2. t e.

o el moses are. hrpvtdsti hereby he. t2. 9: a sette.- m a s; e m t N d y h e t iaa th. h tests a. ota su kmhina he. t tcta iast; f: not a teeev hereW h.-.

n. t lt hat. r ired ens.

transitst es: 60

can be made in the two. upper totaliz e #1 nti. #3 the; an le ers. ha ee 0912... i s with. both. o: o rates; y h ran er ts n hetar mularne, of. the otalizersvrhic in. ng ement w th h ctuatin acks. amt 1s.- iete vine en r es.- Th s enabl s one transfer. chanismta i e.bothupn r ota zers.

nesm tlt h at and #.;2- .ota er are-acasted by. th sal ac uatine. racks t-has been. arran e ha h #2:. al zen be disensagsa r m he ct at n t a he e nnin oi: ach m hine n ra ion, ex ept a. tota a akina suba otal; t kin operat on, he. event. that. t. as not-been.leftdisensaeecl. the-tnd r:

DETAILED DESCRIPTION addition to. the usual left and right side frames and 5! (Figs. 1, 3, 6, and 15), the machine provided- W'ith extension side frames $32 and 53% (Fi 1;. '3 and 6), which are secured,

' respectively, to the side frames 5t and 5i and extend downwardly therefrom.

The, side frames 59 and 5t and the extension side frames 52 and 53,.are retained in proper spaced relation by various cross bars and rods and serve to support the various mechanisms of the machine, as will be explained hereinafter when the various mechanisms. are considered.

The machine is provided with the usual motoroperated driving mechanism, which is shown fully in United States Patent No. 2,423,984 which issued on September 3-0, 1947 on the application of L. Lambert. Since the driving mechanism, per se, forms no part the novel construction, it will bebut briefly described herein, and reference may be had: tosaid Patent No. 2,428,084 for further details if they. are desired.

A suitable. electric motor 55 (:Figs. 6- and- 1 2),

7 mounted on the. sideframe 5%, operates, through a speed reduction. gearing and a one-revolution clutch mechanism, torctate a crank-arm. 5?. A link 58, which is pivo-tally connected-L to the crank-arm 5.! isalsapivotally connected byv a pin 59. to. an arm 58. loose on a rear shaft 81 and: causes the arm 51% to be given a complete oscil-fl lation, first. clockwise then. counter-clockwise (Fig. 6)., for each rotation of the crank-arm 51:. The arm isiccnnected' to the rear drive shaft. fi l; by.- a yieldablesdriving connection which in-.. cludes a lever 62=pivoted on thepin and. urged} by; a, spring 63, connected between. the arm 68 and; the lever 62 to. cause: a roller c t on the lever 62 tabs-maintained in. a notch in. aplate 5'5 se-t cured. to. the. rear shaft. or. The spring at strong enough. tomaintain the. roller in. the notch in plate to. thereby form. a d: .Jing. connection. which. will: be operable to. transmit. the movement of the arm- '68 to the shaft in normal perations but. which willyield and. allow the 1 1. 3. 6 to cam itself: onto-1: the notch. in the plate to interrupt the driving connection and? allQW the. arm. E5}: to be driven independently of the shaft. 6,1; that. shaft. should be blocked: a ains oper tion.

The. shaft 555g extends: transversely between the side, flia;rnes 5 9; and 51}: and. is; supported: by sui-t-.- ablebearings for; oscillating motion therein. Ade. l'h fi t. 1. 1% S de frame. 5!, the. shaft at has. Sew cured thereto a plate-like member.- lfil: tFiss; 3.

- and 13), which member is connected. by a link It to; the usual fnllestroke sec-tor secured to a main. shaft. t3; Elle: shaft 3.3 also is. mounted in the side-frames 58:: and fit for oscil lating motion therein at a point. forward ofr the, rear. shaft. 64

Theplatedike member In; (Figs. 3- and 131): has, in its forward edge, a. depression. into which a. roller 1'4; carried: by; a. bellow crankwhich. ispivotally mounted on the side frame: 51, is-urged by-a spring; 15.. The. notch is; so located in: the member 10 that it will be oppositetha rolleuH- when the member is in its normal, home position, the cooperation of the notch and the roller 74 assisting parts of the machine to be restored to their normal, home positions.

A stub shaft 19 (Fig. 6), which is journaled in the lower part of the motor housing, has secured thereto an arm 80 for controlling the operation of the clutch and also has secured thereto another arm (not shown) for controlling the closing of a switch in the motor circuit. A spring 8i, connected to the arm 80 and to a strap 82 connected to the side frame 50, urges the arm 80 and the shaft 19 counter-clockwise (Fig. 6), but this movement is prevented by a latching lever 83, only one end of which is shown in Fig. 3 but which is shown fully in said Patent No. 2,428,084. The latch is released by means including alink 84 (Fig. 3) which operates the latching lever 83 when the link is pulled forward by the clockwise movement (Fig. 3) of a trip lever 85. The trip lever 85 is pivoted on the side frame 55 and is urged counterclockwise (Fig. 3) by a spring 3% into its normal position, which is determined by a bent-over portion of the lever t engaging the side frame 5|.

When the latching lever 83 is operated by the link 84 (Fig. 3), the shaft 19 (Fig. 6) and the arm 80 will be allowed to rock counter-clockwise (Fig. 6) to move a stud 81 on the arm 39 out of engagement with a clutch dog 83, forming a part of the clutch, thereby to allow the clutch to become effective to couple the motor to the crank arm 57, and also will cause the motor switch controlling arm on the shaft 19 to close the motor switch and start operation of the motor.

Near the end of a machine cycle of operation, a cam member 39 on the crank-arm 5? will engage a roller 98 on the arm 80 and will restore the arm Eli and the shaft 19 clockwise (Fig. 3), against the action of the spring Bl, to their normal positions, the latching lever 83 again becoming effective to retain them in these positions.

As the arm 8t and the shaft 79 are thus rocked clockwise, the arm 80 will move the stud 87 into engaging relation with the clutch dog 88 to render the clutch ineffective, and the motor switch controlling arm on the shaft 19 will open the motor circuit to stop the motor.

Pivotally mounted on the trip lever 85 (Fig. 3) is a bell crank 95 which has an upwardly-extending arm 96 urged into engagement with an upwardly-extending arm of the trip lever 85 by a spring 91 with suihcient force that under normal operatin conditions the rearwardly-extending arm of the bell crank operates as a rearward arm of the trip lever 85 and can be operated to rock the trip lever clockwise. A stud 98 on the bell crank can be engaged by a cam surface 99 on a subtraction control lever Oil or by a forward extension l0! (Fig. 4) of the usual non-add and total lever latch Hi2 pivoted on a stud I03 which extends from a side of the keyboard, to depress the free end of the rearwardly-extending arm of the bell crank 95 and rock the trip lever clockwise to initiate an operation of the machine in subtraction, total, sub-total, and non-add operations. A lever H35, which is mounted on the trip lever 85 on the same pivot as the bell crank, has thereon a stud I66, which lies over the rearward ly-extending arm of the bell crank and has another stud ml, which can be engaged by the usual motor bar to cause the rocking of the trip lever to initiate an operation of the machine to perform addition.

Keyboard The machine is provided with a suitable keyboard upon which amounts may be set up to control the entries of amounts in the machine.

The keyboard used in the novel machine is of the well-known type fully shown and described in the United States patent to Schroder, No. 2,062,781, which issued on December 1, 1936, and to which reference may be had for the details of its construction.

For an understanding of the instant invention, it is only necessary to explain that the keyboard is made up of a plurality of denominational rows of di it keys H6, one row of which is shown in Fig. 1, which keys are normally out of controlling relation with the diiferential mechanism and which, when they are depressed to set up amounts to be entered into the machine, are moved into position to control the extents of movement of the differential mechanism according to these amounts. Each row of keys has associated therewith a plate i ii, to which is connected a zero stop lever H2. The zero stop lever H2 normally is in position to block the operation of a differentially-operable means which is related to this row of keys but is moved from blocking position by a cam surface on the depressed key, which engages the plate Hi and shifts the plate to move the stop lever H2. A latching plate extends along each row of keys and cooperates with the keys of the related row to latch any key of the row in depressed position until another key of the row is depressed or until the keys in all the rows are released by the usual fingers on a key released bail H3 which shift the latching plates when the key release bail is rocked, the latching plate for the row of keys to the right of the row shown in Fig. 1 being shown at H4 in Fig. l.

The keyboard is also provided with the usual locking bails H5, which are moved into cooperation with the keys of the rows by the movement of a slide i l6 toward the right of the machine and cooperate with means on the keys to prevent the depression or release of the keys during an operation of the machine. The slide l 56 is normally retained toward the left of the keyboard but is released for movement toward the right of the machine early in the operation of the machine in a manner fully disclosed in said Schroder patent.

Dz'flerential mechanism The differential mechanism used in the novel machine is substantially like the one fully shown and described in the United States patent to White, No. 1,854,875, and will be but briefly described herein.

A differentially operable means is provided for each denominational row of keys lid, however, since all of the diiferentially operable means are substantially alike, it is believed that an understanding of the construction and operation of these means will be clear from a description of one of them.

As shown Figure l, a stop bar is located immediately below the row of keys H6. This stop bar is pivotally connected at its rear end to a diverging lever l2! and is suitably guided by a supporting bar H2 at its forward end so as to be movable longitudinally immediately below the keys. A spring :23, which is connected to the stop bar I26 and to the supporting bar [22,

normally urges the stop bar to the left. When the machine operates, the stop bar I20 will be allowed to be moved to the. left by the spring I23 until one of the abutments on the upper edge of thebar engages the lower endgcf a. depressed; key to limit the. movementof the: stop bar 20. to. an extent which. corresponds. to. the; value. of the (19':- pressed key.

The diverging lever IsZII' is pivotally mounted on a diverging lever shaft I24 and has. a rear.- ward extension to which is connected an amount. printing-type bar I25. As the. stop-bar I-I2Il. moves. to the left, the diverging lever I 2 I wilt movetheree with, and will" rock counter-clockwise (Fig... 1) about the shaft I245 a distance proportional. to the value of the depressed key, and will position the type bar I25 accordingly to. place:- the type corresponding to: the: depressed key, in: printing. position.

' Alsopivotally mounted on the. shaft I24, im-. mediately adjacent: the diverging lever Iz2I, is a. rack lever I26, which: carries at its upper end. a total izer actuating rack I21, which. rack iscapable of actuating the #1 and #2 totalizers, as

will be explained: later herein.

'The diverging l'ever I 2I: and its associated. up.- wardly extending rack lever I2" are with forwardly-extending, gooseneck shaped arms which contain at their forward ends; slots I28 which are substantially radial to the, shaft I24. A stud I29 carried by: an. arm I 3il of a compl'ementary; lever, extends through the slots I28v in the forward. ex;-

tensions of the pair oflevers. IE-Ii and: I26, and.

couples these levers for joint movement duringv the-operation of the machineior addition. Thus when the diverging lever I.-2I. rocks counterclockwise (Fig; l) about:thexshait- I 2 as-the stopv bar I29 moves'forward to contact aa depressedkey, theupwardly extending rack lever I26; which is coupled thereto-by the stud I29;. will be given a similar movement,

' In order that the-lower or #3 totalizer maybe actuatedunder control of the-keyboard, eachupwardl'y-extendi'n'grack the side lever I32, which carries-at its=lower end a. totalizer actuating rack I33,

Thediverging lever i=2 I, the racklevers I25 and. I32; and the-stopbar- I29"; are norma'llyheldi in. theirhome positions, shown in- Fig. 11, by means.

of the usual cross-bar- I 3'4, which engages. the

front edge of the levers I2I and I 28; The crossz bar I34 extends across themachineand, as shown fully in said White patent, is supported at its ends by the usual pair of arms which are operated to moverthe bar'forwardan amount sufii cient to allow the maximum extent of. setting,

movement of these levers'during the firsthali of a machine cycle, and which return the cross bar. and the levers to the position shown inFign 1 during the last half of a machinencycl'e, as well known inthis-type of machine;

In the operation of-the differentially operable. means, therefore, the; diverging lever, the, rack levers, the stop her. will movczwith. the. cross bar I3 5 until one of the abutments on the stop her 52% engages thelower end of a depressed key, to prevent. their further movement, after whichthe cross bar. Iii leaves-theiront edge of the levers IZI. and I26and continues its. movement. Inits return movement, thecross. bar.v ass, tit. and. the rack. lever I23; from. theinset positions and carries picks up: the: diverginglever them, the; downwardlygextending rack, lever I 32;

and the stopibarwithitbachtostheir-normalzposia tions, as shown inil fi'g. :12.

provided.

rotatable about a shaft I:3I,.

lever I26 has secured to: thereof a downwardly-extending rack.

stud I29, to urge subtract operations, it

8 Subtraction mechanism Subtraction is performed the instant machine by the well-known method of complementary addition.

In order to obtain the complement of the amount to be subtracted; mechanism similar tothat shown in the White Patent No. 1,854,875- is used.

explained earlier herein, the studs [29 on the arms I35 of the complementary levers on the shaft I3 I couple thediverg-ing' levers I 2 I: and the rack levers I126 for joint movement. This enables the rack levers I26 and the rack levers I 52 to be displaced extents corresponding to the true value of the digits of anamountwhich is set up on the keyboard;

In subtracting operations, the shaft Hil is shifted towards the right of the machine, andthe complementary levers, which are mounted on the shaft for rotation but not for axial move-- ment thereon, will also be moved to the right;- When the complementary levers are thus moved: to the right, the studs I29 will move out of the slots I28 in the diverging levers- I-ZI to uncouple the diverging levers from the rack levers. I25. This lateral movement of the complementary levers will move arms Iatthereon. into-the path oi'movement cistuds I i I- carried by the stop bars I26;

A spring; I52- connected between each diverging lever I2 I and its related arm FED, urges the arml l'il into engagement with thestud MI in subtracting operations. This spring is also efieG- tive', through thecomplementary lever and the the related rack lever I26 for-- wardly; so that the rack levers I26 and I32 can be set differentially when thecross bar I3' I'"moves=- away from the rack levers IZ'E- during the first part of a machine operation;

The stud I' iI- carried by the stop'bar i'sso lo cated thereon and in relation to its related arm I139 that, inorders above theunits d'eno'mina tional' order, when the arm Mills moved by the spring, Hi2 into engagement with the-stud I'M in will cause the racltlevers I2 6' and. I32 tobe positioned an extent which will enable" the nines complement of a digit set up in. any or those denominations of the keyboard to be entered into the corresponding order-ofthe pta a r- The diiierentia'lly operable means for the units denominational. orderoperates'in' a; similar man-- ner,.but the relation betweenthearm I Iilon-the' complementary lever and the stud I II I"carried by the stop bar'i's" such as tocausethe rack levers I26 and I32 to'be' positioned" an extent which willenable the tens complement of the digit set up in this denominationv of thakeyboard: to be enteredinto'the-totalizer.

It should-be noted that, whilethe rack levers areoperable-to .enter thefnines complement; asrequired, .of the digits making up amounts. to-be subtracted,, as explained above, the diverginglevers-I 2-I, ywhich are connected to the stop bars- I-20,will be operated accordingto the-truelvalue of the'various digits of the amount and lwillijse t the type bars-I25 to print the digits-Which are s tupa t k board.

The shait ISI is. shiftedto the right-insubtractingt operations. by. means which are fully. shown in' said .Ratent NQ. 2,428,084,. and which wilhbe:but-brieilydescribedherein. I

Theshaft 13 1.- FiQSvl, 3. and'6) hasthe-usual lever I45 (Fig. 6) secured adjacent its left-end,

which lever, at its lower end, carries a roller I 46 extending into a cam slot in a plate I41 secured to the side frame 50. When the shaft I 3i is rocked counter-clockwise as viewed in Fig. 6 or clockwise as viewed in Fig. 3, the roller 146, cooperating with the cam slot in the plate I41, will shift the shaft I3I to the right of the machine.

The means for rocking the shaft I 3I to bring about its shifting movement are shown in Fig. 3. Secured to the shaft I3I is a lever having a forwardly-extending notched segment I48 and a downwardly-extending restoring arm I49. Loose on the shaft I3I, adjacent the lever having the forwardly-extending notched segment, is another lever having one arm I50, to which a pawl II is pivoted, and having another arm I52, which carries a roller I53. A lever I55, pivoted on a stud I56 on the side frame 5I, has a cam edge I51, which cooperates with the roller I53 and has a roller I58, which cooperates with a cam surface on the lower edge of the usual full-stroke sector 12. When the sector 12 is rocked counter-clockwise during the first half of a machine cycle, the cam surface thereon cooperates with the roller I58 on the lever I 55 early in the operation of the sector and rocks the lever I55 clockwise. As the lever I 55 is rocked by the sector, the cam edge I51 on the fore part of the lever I55 acts on the roller I53 to rock the arms I and I52 clockwise (Fig. 3) about the shaft I3I.

The pawl I5I, which is carried by the arm I50, is urged by a spring I59, which tends to move the pawl into a position where a bent-over portion of the pawl cam engages the notch in the segment I43 and couples the segment to the arm I50; however, in the normal position of the parts, a stud ISIS on the subtraction control lever IBIJ engages an upward extension of the pawl I and holds the pawl out of coupling engagement with the segment I so that the operation of the arm I 53 and the pawl I5I will be an idle one.

In a subtracting operation, the subtraction control lever IE5 is rocked clockwise (Fig. 3) by the usual subtraction key as shown in said Patent No. 2,428,684 and moves the stud I forward in the machine, allowing the spring I59 to move the pawl I5! to engage its bent-over portion with the notch in the segment I48, coupling the segment I43 to the arm I50 for clockwise operation thereby. Since the segment I48 is secured to the shaft i3 I, the shaft will also be rocked clockwise in Fig. 3 and counter-clockwise in Fig. 6, which movement will through the cooperation of the roller I 45 in the slot in plate I41 (Fig. 6) cause the shaft I 3i to be shifted to the right, as explained earlier herein.

A second lever I55 (Fig, 3) pivoted on the stud I55, has a roller I55, which cooperates with another cam surface on the bottom of the fullstroke sector 12 and is rocked clockwise by the sector just before the sector returns to its home position near the end of the second half of a machine cycle of operation. The forward part of the lever I65 engages a stud I51 on the downwardly-extending restoring arm I49 and i effective, when the lever I65 is rocked clockwise, to impart restoring counter-clockwise (Fig. 3) movement to the shaft I3 I, which counterclockwise movement will, through the cooper ation of the cam slot in the plate I 41 and the roller I46 on the lever I45, cause the shaft I3i to be restored to the left. Restoration of the shaft IZII to the left enables the studs I29, carried by the complementary levers, to .reconple the diverging levers I2I and the rack levers I26 for joint movement.

A spring I68 (Fig. 3), connected to the restoring arm I49 and the arm I58, is effective to transmit the restoring movement of the arm I49 to arms I50 and I52 to return them to the position shown in Fig. 3.

A stud I43 (Fig. 6) on the lever I45 will rock a bell-crank I44 when the lever is rocked to subtracting position. The bell-crank I44 through the usual link I 31 and yoke I38 will cause a ribbon supporting frame to be shifted, as fully disclosed in the White Patent No. 1,854,875, and my Patent No. 2,428,084, to cause subtracted amounts to be printed in red. In a manner similar to that shown in my Patent No. 2,428,084, a member on the ribbon supporting frame can engage a symbol type bar, a portion of which is shown at I39 (Fig. 4), and raise the bar to move a minus sign into printing position.

Totalizers The #1 totalizer is similar to the one shown in the United States patents to Peters, No. 1,386,- 021, and White, No. 1,854,875, and contains a totalizer wheel I10 for each of the differentially operable means in the differential mechanism.

The totalizer wheels I14 are mounted in a totalizer supporting frame (Figs. 5 and 15) which is composed of a plurality of plates I1I secured in proper spaced relation on a shaft I12. The frame thus formed is rockable about the trunnions I13 and I14, which extend into recesses in the ends of the shaft.

Extending through the plates I'II near their rear end is a rod I 15, upon which the totalizer wheels I15 are individually rotatable. Each totalizer wheel has a pinion I15 connected to it on the right (Figs. 5 and 15) by a spacing sleeve and has a tens transfer cam I11 (Fig. 15) suitably connected to it on the left. The totalizer wheel unit thus formed occupies the space between adjacent plates I1I, which serve to retain the unit in its proper lateral position. The trunnions I13 and I14 are adjustable in the side frames 56 and 5!, respectively, to enable the totalizer to be moved crosswise in the machine to aline the pinions with the actuating racks.

Suitable engaging means, which will be described later herein, rocks the totalizer frame about the trunnions I13 and I14 at the proper time in the operation of the machine to engage and disengage the pinions I15 with and from the actuating racks I21.

The #2 totalizer contains a totalizer pinion I (Figs. 5 and 15) for each of the differentially operable means in the differential mech anism. These pinions are mounted in a totalizer supporting frame composed of a plurality of plates I8I, which are freely mounted on the shaft I 12 for pivotal movement thereon but which are retained in proper spaced relation by being secured to a rod I82, which extends across the Width of the totalizer and below the shaft The pinions I80 have transfer cams I55 secured to their left sides by sleeves. The units thus formed by the pinions I and the cams I85 are individually rotatable on a rod I83, which is carried at the rear portion of the plates I8I, the pinions being so located laterally between extent laterally from the transfer cams I11 of the #1 totalizer.

.The :rod 2183 extends through casuitable 61821- ance openings I84 in the plateselzfl,vwhicmallow thensupportingi.frametifor the -'#2 totalizerrtokbe rocked independently :of the frame awhichz-snpports the r 1 totalizer, sand sena-lole "the apinions I88 of .the #2 :totalizer 'toabe @engage'd' with rand disengaged from the actuatin tracks r1121 "independently .of theiplinions'zl lfiifor the'.-':#'1 totalizer.

Suitable :novel engaging imeans differing from that for the mainztotalizers #1 and -#3,- which will be described latervherein, rocks the supporting frame tfor'ithe "#2 totalizer about the --shaft H2- at proper times:.:ln lthecoperation :of "the machine toiengageand disengage the pinions 1 88 with :andfrom thesactuating cracks t2! Alining plates Lie!) -.(Fig. :.1;) :are esupported ;.in

. the rearriof the 'pinions 51.716 "and 80 Joya-means of rods 19! and ASL-secured :inzlthewside frames 50 and 51. Eachnfrthese .platesthasttwoalining teeth, the usual zone avhichris enga edday the related pinion I16 of .the #ltotalizer when that totalizer is in disengaged position, and an additional tooth which is zlocated ea :iorward :extension of the plate '2 I80 and is tengagedby the related pinion 18B of the #z totalizer -when that totalizer is in disengaged :position.

The lower 7 or ':#3 totalizer .also .is ,Lsin'i'ilar :to the oneshown in the 'Unitedrstates patentsto Peters, N0. 1386;021, and White, lN'O. :1;854',37.5..

This .totalizer: contains tpinion r95 andnthe usual tens transfer cams 196 .(Fig. i4)., which-are rotata-ble on a rod elm carried by a totalizer supporting frame. The totalizer supporting frame is made up of plates I98, secured :to the :shaft lea-which is rockable on'trunnions :lfildand 28! (Figs. 3 and 6-), secured, respectively,1ln the:.extensions 52 and 53. Thepinions N are positioned laterally so as ito .be copposite the-various actuating racks l33acarried bythe downwardlyextending rack levers 432, with whichiracks the pinions may be engaged at :the proper atim'e in the operation of the=machine' when:the .totaliaer supporting frame is rocked by its itotalizer wengaging means.

Alining plates 252 Fig. l) are supported .011

rods 2&3 and "2M secured to the side frames 50 v and 5! and the extensions 52 and 353 arndlhave teeth with which the pinions 119-5 -;engage when the #3 totalizer is moved to disengaging position.

Tens transjer'mecham'sm he tens transfer mechanism associated with the #1 and the #2 totalizers is'simi'lar in many respects to .the one shown and described the above-mentioned United states patent to Peters, No. 1,386,021 however, it has been improved to enable the single transfer mechanism tobe-controlled selectively by either of these 'totalizersto effect'tens transfer entries therein.

As explained earlier herein, each rack lever :25 carries, at its upper end, an actuating rack I21. The actuating rack 12'! (Fig.1) is mounted on the rack lever I26 for limited .rela'tive .movement thereon 'by'means of a pair of shouldered studs 2.18, which slide freely within a related ,pair of slots 2H in the lever 1.26. The rack I21 is urged rearwardly .on thelever 126 by a spring2 l2, connected to a stud on the lever I26 .and 'to a bent-over ear on .a plate 2 l3, secured .to the rack 12.? and tending to move the studs into engagement with the rear endsof the slots.

A transfer lever 2.512 is pivoted on a rod 2l5 carried by the plates I99 and. is urged by a spring 215 into engagement with a transfer lever latch 2|? pivoted on a rod 2I& also carried by t plates 2111.90. lnsthe normalpositionofvthe-parts, as shown in flig. 1, =when nc 1 transfer is to be effected, in. Elaterally-extending -arm 22!} (Figs. :1 and-2) 201'1:ilrhelllallsiel lever .2M: for: one denominational order engages ::a flange 22l (Fig. 2) on the' plate 2453: secured to theactuating :rack 121 of thenext higher denominational order andprevents the actuating rack 121 fromnmoving "its full xextentrearwardly by .oneincrement of movementas -.=the frack r'lever 125 returns to 'its home position.

If, fduringr-an entryJi-n the -#.1-.or=the #2 totalizer thescapacity .of any denominational order is exceeded,tthe-transfer-cam.secured' to the pinion in that order williengage ian-=-associated bent-over eareon-fthe transfer lever 21 i and willrockthe freeeencrof the transfer :leverl I l downwardlyto moves-the arm Z ZU-bBIOW the-path 0f the flange 22! onrthe actuating r-ack l-21-.-of thenext higher order. The transfer Lleverelatches 2 H related to thempera-ted transfer levers rook slight extent counter-clockwise -(Fig. a1) toeng-ag-e over shoulders 222 -.on -athe upper surface of these transfer levers 2M torretaintthese transfer levers in their operated position, '"as :is 'wellknown in the art. When the .racks I21 are returned with the rack levers --l 2 6,'. the flanges 221 on those racks which are controlled fromthe-operated transfer levers, will move over the arms 22.8 on 'theoperated transfer levers 2 M and allow-those racks to move far-ther to the rear than -=.the ones which cooperate with arms on unoperated transfer levers. This further --movement of the racks is sufficient to cause .an additional value of l to be entered into their zrelatedtotalizer pinions.

It is -to-bem0ted :that the transfer levers 21 3 are lcngenough-and -have bent-cverears opposite the two upper totalizersso that, when either totalizer isengaged with theactuating racks I2F, its transfer cams -.can cooperate with the related bent-over ears -on the transfer levers-214 to opcrate -the transfer vlevers and allow tens transfer entries to \be :made in that particular totalizer. The instant construction, therefore, enables one tens transfer "mechanism to serve both the #1 totalizer and their-'2 totalizer.

.The transfer lever latches iii are restored earlylin the :next machine cycle of operation by mechanism-similar to that shown in my application Serial N0. -586,360, which issued as United States Patent 2,592,436, on April 8., 1952. Each transferlever'latch21l'l (Fig. 1) has an upwardlyextending "arm 225, which'lies closely behind a cross bar of .a'bail 226, which extends across the totalizers land is secured to a shaft 22? journaled in the s'id'e frames 50 and 5!. -Secured 'to the right end of the shaft 22? (Figs. 3 and 14) is a bell crank'having 'onearm 228, whichengages a limiting stud22fi on the side frame-s2, and having another arm 239, to which the upper end o'f a link 231 is pivoted. The lower end of the link 23?! is guided an open-ended slot :in a plate 232 secured to the side frame 55 "and is urged into the forward 'portionof the slot in the :plate 232 'by :a spring 233, which urges the link 23! downwardly and forwardly.

A'stud 234 on the link TH engages the bottom of the link 23] hear the beginning of each machine cycle of operation 'and shifts "the link 23! in the direction of its length to cause the bell crank and shaft 221 to be rocked couhter clockwise (Figs. 1 and J3) and move the cross bar of the bail 226 therewith into engagement with the upwardly-extending arms 22-5 .of the transfer lever motes, 211. This movement of the 'bail 226 will rock the latches 2|! clockwise (Fig. 1) to clear the shoulders 222 on any operated transfer levers and allow these transfer levers to make an initial movement to their unoperated position. The transfer levers 256 will be completely returned to their unoperated position by the springs fit when the flanges 2ft move from over the arms 2225 during the forward movement of the actuating racks I21.

This restoring mechanism is effective to restore the transfer lever latches when either the #1 or the #2 totalizer has been operated.

The tens transfer mechanism associated with the #3 totalizer also is similar to that shown in the patent to Peters, No. 1,386,621. The actuating racks i 33 (Fig. l), which are mounted for movement relative to the downward1y-extending rack arms E32, are also urged by springs 2th to make the further step of movement necessary to cause tens transfer entries. Transfer levers 2M, pivoted on a rod 242 carried by the plates 262, are operated. by transfer cams see (Fig. e) and are retained in their operated position by transfer lever latches 2%, which are pivoted on a rod 244, which also is carried by the plates As in the Peters Patent No. 1,386,621, the transfer lever latches are restored by the engagement of arms 245 on the latches by the plates its of the totalizer supporting frame when the #3 totalizer is disengaged.

Totalizer engaging means The totalizer engaging means for the #1 totalizer is shown in Figs. 4, 7 and 9 and is similar to the one shown in my copending application for United States Letters Patent, serial No. 586,359, which was filed on April 13, 1945, which issued as United States Patent 2,562,049, on July 24:, 1951.

The plate ill, for ing the right-hand side of the #1 totalizer supporting frame, a downward extension 255 (Figs. 4 and 7), which carries near its end a roller 25L The roller 125i extends into a cam slot 252 in a cam lever which is pivotally mounted on a stud E54 extending inwardly from the side frame 5 The upper portion of the cam slot 252 is farther from the stud 254 than is the lower portion, so that, when the cam lever 25?; is in the position in which the roller 25 l is in the upper part of the cam slot 252, the totalizer supporting frame will have been rocked about the trunnions H3 and its to shift the pinions 76 into engagement with the actuating racks I 21'. When the cam lever has been rocked about the stud and the roller 25! is in the lower part of the slot 252, the supporting frame will have been shifted to disengage the pinions from the actuating racks.

A detent latch (Fig. 4-), pivoted on a stud 255 on the cam lever and urged counterclockwise by a spring 251, cooperates with a stud 258 on the inside of the frame 5! to locate the cam lever accurately in the position shown or the position in which the cam slot in the lever causes the totalizer to be disengaged from the actuating racks, and to yieldingly retain the cam lever 253 in either position.

The cam lever 253 is rocked by the following actuating mechanism to cause the totalizer to be engaged with and disengaged from the actuating racks.

Pivoted on the stud 254 (Figs. 7 and 9) adjacent the cam lever 25-3 is .a lever 26!! having a pin 26I engageable with a forward surface of an upwardly-extending arm 262 on the cam lever 253.

The upper end of the lever 260 carries a stud 263, upon which a coupling pawl 264 is pivoted. This coupling pawl 264 is urged by a spring 265 into engagement with a stud 266 on the upwardlyextending arm 262 of the cam lever 253. The pawl 264, by engaging the stud 266, retains the arm 262 with its forward surface in engagement with the stud 261 on the lever 2E0 and thereby latches the cam lever 253 to the lever 25s for operation therewith.

The lower end of the lever 265 has a stud 2W (Figs. 7 and 9) which is engaged by a forward notched portion of a pitman 21!, which pitman, in turn, is pivotally connected to the upper end of a three-armed lever 212 (Figs. 4, 7 and 11), pivoted on a stud 213 which extends inwardly from the right side frame 5|.

The notch in the pitman 21-! is held in engagement with the stud 270 on the lever 259, against the action of a spring Zi-i, by the engagement of a roller 275 against an upwardly-extending arm 216 (Fig. 9) of the usual total control bell crank 21?, pivoted on a stud 2T8 extending inwardly from the side frame 5|.

The three-armed lever 272 has a (Figs. 4, 11 and 16), which cooperates with a spring-urged pawl 23! pivotally mounted on an arm 282 on the rear shaft 65 and enables the three-armed lever to be rocked counterclockwise (Figs. 4, 11 and 16) when the arm 282 is rocked counter-clockwise at the beginning of the operation of the machine. This counter-clockwise rotation of the three-armed lever 2'52 will, through the pitman 2H and the lever 265, rock the cam lever 253 clockwise to cause the totalizer to be disengaged from the actuating racks. A second stud 234 (Figs. 11 and 16), carried by the threearmed lever 272, cooperates with the pawl 28 near the beginning of the second half of the machine cycle and enables the pawl to rock the three-armed lever clockwise back to its home position. This clockwise rocking of threearmed lever 212 will, through the pitman 2H and the lever 26%], rock the cam lever 253 counterclockwise (Figs. 7 and 9) to cause the tctalizer to be engaged with the actuating racks. In this manner, the totalizer is rocked into engagement and out of engagement with the actuating raclzs during normal adding and subtracting operations if the totalizer has been selected for operation in a manner to be explained later herein.

A detent 283 (Figs. 4 and 16), pivoted on one side frame 5!, carries a stud and spring urged to force the stud into one or another of two notches in a forwardly-extending arm of is lever 21 2 to retain the lever in either of its rocked positions.

Wh n the #1 totaliser is not selected for operation, a stud 285 (Fig. 7) is moved into the path of movement of an upwardly-extending on the pawl 25 -3. When the lever 236} is rocked clock- (Fig. 7) near the beginning of the first half of the machine cycle, it will, through the pin 265, rock the cam lever 253 to disengage the totalizer. As the lever 25B and the pawl n the end of their movement, the upwardly-exten ing arm of the pawl will engage the stud rock the pawl out of engagement with the stud 255, to uncouple the lever 23:3 from the lever 253. The pawl will be held out of ment with the stud 256, so that the return zement of the lever 259 near the beginning of the second half of a machine cycle will not rock the can. lever 253, and the totalizer will remain out of engagement with the actuating racks during their stud return movement, thereby preventing the entry of an amount therein.

Near the end of those operations in which the totalizer remains disengaged from the rac during their return movement and after the actuating racks have been returned to their home position, a finger 286 (Figs. 4 and '7) loose on the main shaft 73 will be engaged by a stud 23'; on an arm 288 secured to the main shaft '53 and will be rocked clockwise (Figs. 4 and 7) thereby. When the finger 285 is thus rocked, its upper porticn will engage a stud 238 on the cam lever 253 and rock the cam lever counter-clockwise to cause the totalizer to be engaged with the actuating racks.

This movement of the cam lever 253 moves the stud 265 into position where it is again engaged by the pawl 12% to recouple the cam lever to the lever 269 for operation thereby.

The'itl totalizer, therefore, will be in engage ment with the actuating racks at the end of every operation of the machine.

The totalizer-engaging means for the total izer is similar to the one for the #1 totalizer.

The plate 98 (Figs. 4, 9 and 11), forming right side of the #3 totalizer supporting frame, has a rearward extension carrying aroller 2%, which extends into a cam slot 29'? in a lever 298 pivoted on a stud 299 extending from the inside of the side frame i. when the roller 2% occupies the forward end of the slot the totalizer frame will have rocked about the truthnions 286 and 253! to engage the totalizer pinions 595 with the actuating racks $33, but, when the cam lever 288 has been shifted and the roller i296 occupies the rear end of the slot 29?, the supporting frame will have been rocked to disengage the totalizer pinions from the actuating racks. A detent 3% (Fig. 4) locates and retains cam lever 29s in either position.

Also pivoted on the stud 299 is a lever (Figs. 9 and 11), which has a pin SE32 engaging the lower surface of a forwardly-extending arm of the cam lever 298, has a pivoted pawl en gaging a stud 3536 on the forwardly extending arm of the cam lever, and has a stud (Fig. 9) which is engaged by a notch in a rearward extension Of a downwardly-extending A spring 3M (Figs. 4 and 9), connected to the total control bell crank 2?? and to the pitrnan 3&5, normally urges the lower end of the pitrnan toward the front of the machine, but a stud on the upwardly-extending arm 2'36 of the total control bell crank 2T1, engages a forward surface on the pitman in adding and subtracting operations and maintains the notch in the pitman in engagement with the stud 385 against the action of the spring 391.

The pitman 3% has its upper end pivoted to the forwardly-extending arm of the three-armed lever 2'52, is given a downward movement when the lever 2'52 is rocked counter-clockwise near the beginning of the first half of a machine cycle of operation, and is returned upwardly when the three-armed lever 212 is rocked clockwise near the beginning of the second half of the machine cycle of operation.

When the #3 totalizer is selected for operation. this downward and upward movement of the pitman will be effective, through the lever 39!, to rock the cam lever 298 and cause the #3 totalizer to be disengaged from the actuating racks during the first half of a machine cycle of operation and be engaged with the racks during the second half of this cycle.

As in the case of the #1 totalizer, when the #3 .16 totalizer is not selected for operation, a stud is it is positioned in the path of movement of an arm on the pawl 3% to disengage the pawl from the stud 35:4 and uncouple the cam lever from the lever 3i}! after the cam lever has been shifted to cause the totalizer to be disengaged from the actuating racks. The totalizer will remain dis engaged from the actuating racks and .1 re ceive no entry as the racks return to their position.

In those operations in which the #3 totalizer remains disengaged from the racks during their return movement, it wi l be engaged with the racks after they have returned to their hone position. This is accomplished 3y a hell (Figs. 4 and 11) pivoted on a stud 325 on the side frame 5!, the bell crank having a forwardly-extending arm 3H5 (Fig. 11), which engages stud 3H on the cam lever 2%, and having an upwardly-extending arm 3E8 carrying a roller 339, which is engaged by the rear edge of the E3. on the rear shaft Ell. As the arm 2532 moves counter-clockwise (Fig. 4*) at the beginning of a machine operation, a spring 325 will rock the bell crank counter-clockwise until the 5H3 engages a stud 32! on the side frame This movement of the bell crank will move the arm iii '5 from its engagement with the stud on the cam lever 298 and will allow the cam lever to be shifted clockwise when the totalizer is disengaged from the actuating racks. Near the end of the movement of the arm 2552 to its home position, it will engage the roller 3H! and rock the bell crank clockwise, causing the arm 35% on the bell crank to engage the stud 35'! on the cam lever and rock the cam lever to the position in which it causes the totalizer to be engaged with the racks.

The restoring movement of th cam lever 2% moves the stud 364 into a position where the pawl 3% engages it and recouples the cam lever 28% to the lever 35 for further operation therewith.

The #3 totalizer, therefore also will he engaged with the racks at the end of each operation of the machine.

The totalizer-engaging means for the or extra totalizer is located at the left-hand side of the machine and is somewhat different from the engaging means for the #1 and the #3 totalizers.

The plate lSi, forming the left side of the totalizer supporting frame (Fig. 5), has a downward extension 325, which carries a roller 32% near its lower end. The roller 5 5 extends into a cam slot 32'! (Figs. 6 and 8) in a cam lever which is pivotally mounted on a stud extending inwardly from the leit side frame This cam slot 32'! will cause the #2 totaliz-er supporting frame to be positioned with the pinions 5% in engagement with the actuating racks 52? when the roller 32% occupies the lower portion of the slot, and will cause the totalizer supporting frame to be positioned with the pinions Hid out of engagement with the actuating racks iii when the roller 326 is in the upper end of the slot.

A detent 330 (Fig. 6), mounted on a pl 3!}! on the cam lever 32%, is urged clockwise into engagement with a stud 332 on the side frame 5%, to retain the cam lever 328 in either of these positions.

The pin 331 (Figs. 6 and 8) on the cam lever 528 extends through a suitable opening in the side frame 59 and into the path of movement of a pawl which is pivotally mounted on a segment 336 secured to the main shaft E3. The pawl 335 is urged by a spring 33? into a position in which the longestdimension of the pawl is substantially radial to the shaft. The free end of the pawl 335 is provided with a shoulder 338.

which, in the home position of the pawl, as shown in Figs. 6 and 8, lies under the pin 33!. Early in the movement of the segment 336, clockwise in Fig. 6 and counter-clockwise in Fig. 8, the shoulder 338-on the pawl will engage the pin 33! and will shift the cam lever 328 to cause the upper portion of the cam slot 321 to cooperate with the roller 325, thereby causing the supporting frame to be rocked to disengage the pinions I80 from the actuating racks 21 if not already disengaged. This disengagement of the #2 totalizer occurs in adding or subtracting operations before the racks begin their forward movement.

A link 340, which has a stud 34l in its forward end, is pivoted at its rear end to the cam lever 328. When the #2 totalizer is selected for operation, as will be explained more fully hereinafter, the stud 34l is positioned opposite a notch 342 in the edge of the segment and in the path of movement thereof. As the segment approaches the end of its clockwise movement (Fig. 6) near the end of the first half of a machine cycle of operation, the notch 342 in the segment will engage the stud 34 l, and the continued movement of the segment will pull the link 340 forwardly to rock the cam lever 328 (counter-clockwise in Fig. 6 and clockwise in Fig. 8), to cause the lower end of the cam slot 327 to engage the roller 326, thereby rocking the supporting frame and engaging the pinions I80 the actuating racks have completed their forward movement. The pinions remain in engagement with the actuating racks and in adding and subtracting operations will receive entries during the return movements of the racks.

A spring 343 (Fig. 6) connected between an extension of the segment 336 and the side frame, is utilized to assist in the restoration of the main shaft 13 to its normal position.

Totalzzer selecting mechanism The mechanism for selecting any one of the totalizers for operation is shown in Figs. 3, 4, 6, '7, 8 and 11 and includes a totalizer selecting lever 350 and a plurality of trains of mechanism operated thereby which extend to and control the operation of the engaging means for the various totalizers. In these figures, the selecting mechanism is shown in the position in which the #2 totalizer is selected for operation.

The totalizer selecting lever 350 (Fig. 3) is pivotally mounted on the end of the stud I03 which extends from the side plate of the keyboard, and is settable to any of three positions, in each of which it will control the selection of a different totalizer. During the operation of the machine, the totalizer selecting lever is retained in its set position by means of a projection 349 on the right end of the slide H6, which projection enters into suitable holes in the lever when the slide I I6 moves to the right of the machine near the beginning of an operation of the machine.

Stud 35| (Figs. 7, 8, 10, 11 and 14) in the lower end of the lever cooperates with control surfaces formed on the forward portion of the levers 352, 353, 354 and 355, pivoted on a stud 356 extending from the outside of the side frame The levers 353, 353 and 355, respectively, control the positioning of the symbol-printing type bar and the operation of the engaging means for the #1, the #3 and the #2 totalizers.

Levers 353 (Fig. 7), which controls the engaging means for the #1 totalizer, is urged clockwise (Fig. 7) by a spring 351, which maintains the control surface on the forward portion of the with the actuating racks I27 after 0 18 lever in engagement with the stud 35!. An upwardly-extending arm 358 on the lever 353 extends through a suitable opening in the side frame 5! and carries the stud 285 which controls whether or not the coupling pawl 23% will remain in engagement with the stud when the totalizer selecting lever 35E] is in either its #2 or its #3 totalizer selecting position, the stud 351 will position the lever 353 so that the stud 285 will be in the path of movement of the coupling pawl 26 and will disengage the pawl from the stud after the pitman 271 has rocked the lever 23:] and the cam lever 253 to disengage the #1 totalizer. With the pawl 284 thus disengaged, the return movement of the pitman 2H and the lever 26.: will be ineffective to shift the cam lever 25-3, and the totalizer will remain disengaged from the actuating racks during their return movement, thereby preventing the #1 totalizer from receiving entries when either the #2 or the #3 totalizer has been selected for operation. As explained earlier herein, the cam lever 253 will be rocked by the finger 286, at approximately the end of the machine cycle of operation, to cause the totalizer to be engaged with the actuating racks.

When the totalizer selecting lever 358 is in its #1 totalizer selecting position, the lever 353 will be positioned with the stud 285 out of the path of movement of the coupling pawl 234, and the cam lever 253 remains coupled to the lever 260 to be operated thereby and cause the totalizer to be engaged with the actuating racks at the beginning of the second half of a machine cycle, thus enabling entries to be made into the #1 totalizer as the racks return to their home positions during the second half of a machine cycle in adding and subtracting operations.

Lever 354 (Figs. 3, 11 and 14), which controls the engaging means for the #3 totalizer, has a downwardlyextending link 36!] pivoted at its rear end. A stud 36! in one arm of a bell crank 3E2, pivoted on a stud 383 on the outside of the side frame 5!, extends through a slot 364 in the lower end of the link 36!] and is urged into engagement with the lower end of the slot by a spring 365. The spring 355, by urging the stud 35| into engagement with the bottom of the slot 364, exerts a pull on the link 330 which is eiTective to maintain the control surface at the front end of lever 35:3 in engagement with the stud 35I on the totalizer selecting lever 350.

The other arm of the bell crank 352 carries the stud 3H3, which extends through a suitable opening in the side frame 5| and cooperates with the coupling pawl 353 to control the coupling of the cam lever 253 to the lever 3li| for operation thereby when the lever 30! is operated by the pitman 306.

When the totalizer selecting lever 353 is in either its #1 or its #2 totalizer selecting position, the stud 35l will cause the lever 354, the link 36D,

and the bell shown in Fig disengage the #3 totalizer. With the pawl 353 thus disengaged, the return movement of the pitman 306 and the lever Sfii will be ineffective 9 either the #1 or the #2 totalizer has been selected for operation.

In those operations in which the #3 totalizer remains out of engagement with the actuating racks I33 during their return movement, the arm 3 l 6 will engage the stud 3 l i on the cam lever 298 near the end of the machine cycle of operation, as explained earlier herein, and will rock the cam lever to engage the totalizer with the racks after they have returned to their home position.

When the totalizer selecting lever 355 has been moved to its #3 totalizer selecting position, the stud 35! will be opposite a low portion of the control surface on the lever 35-; and will allow the spring 355 to shift the bell crank 362 to move the stud 359 out of the path of movement of the pawl 303, so that the cam lever 298 will remain coupled to the lever 35! to be operated thereby and cause the totalizer to be engaged with the racks at the beginning of the second half or a machine cycle. This enables entries to be made into the #3 totalizer in adding and subtracting operations as the racks return to their home positions during the second half of the machine cycle of operation.

Lever 355 (Figs. 3-, 6 and 8), which cooperates with the stud 35! on the lever 35% to control the engaging means for the #2 totalizer, has pivotally connected thereto, the upper end of a link 310-, whose lower end is 'pivotally connected to an arm 31! secured on the right-hand end of a shaft 372, which extends across the machine and is journ'aled in the extensions 52 and 53. Adjacent its left end, the shaft 312 has secured thereto an arm 313-, to which lower end of a link 374 is pivotally connected. The upper end of the link 374 (Figs. 6 and 8) has therein a slot 315, which cooperates with 'a stud 316 on a lever 31! pivoted on a stud 318, to enable the link 314 to be moved up and down in a substantially vertical path.

The link 314 has a forwardly-extending finger 38!, which lies under the stud 34! and enables the link 314 to control the positioning of the stud 34! relative to the notch of the segment 336, A spring 382 (Fig. 6), connected to the stud 34! and to the link 3T4, maintains the stud in engagement with the linger '38 When either the #1 or the #3 totalizer is selected for operation, the stud 35-! will engage one or the other of the end portions of the control surface on the lever 355, thereby rocking the lever to operate the parts connected thereto, which causes the link 314 to be moved upwardly to raise the stud 34! out of the path of movement of the segment 336-. As explained earlier herein, if the stud 34! is in the path of move ment of the segment 335, the segment will en'- g-age the stud 35! near the end of the first half of a machine cycle of operation in adding and subtracting operations and will pull the link 3411 forwardly to rock the cam lever "3-28 and cause the totali'zer to be engaged with the actuating racks to be operated thereby-and receive-entries during the return movement of the racks. Accordingly, when either the #1 or the #3 totalizer has been selected for operation and the stud 34 has been moved upwardly out of the path of movement of the segment 336, the segment cannot pull the link 340 forwardly, and thetotalizer will remain disengaged from the racks during their return movement, thereby preventing the #2 totalizer from receiving entries when either the #1 or the #3 totalizer has been'selected for operation.

342 in the forward edge When the #2 tdtalizer is selected for operation, the positioning of the totali'zer selecting lever 35!] will place the stud 35! in cooperative rela= tion with the central portion of the control sur"-' face on the lever 355. This allows the lirili 316 to move to its lower position to place the stud v 34! where it can be engaged by the notch 342 in the segment 336 and enables the segment to un the link 340 forwardly to cause the totalizer to be engaged with the actuating racks before they. begin their return movement, thus enabling tries to be made into the totaliZer.

It is seen that the totalihr selecting mechani sih, by Selectively controlling the totaliz'er ngaging means, can eontrol 'wh i'ch totalizers will remain out of engagement with the actuating racks during their return movement and can thereby select any one of the three totalizei s to receive entries in adding and subtracting oper--- ations. I, J

A type bar 385 (Fig. 10) is set under control of the totalizer seleeti'ng lever 35!! to cause the digits 1, 2, or 3 'to be printed to indicate which of the totalizz'e'r's is selected for operation. As the totalizer selecting lever is positioned to select a desired one of the totalizers, the stud 35! thereon will cooperate with the control surface at the front of the lever 352 to enable the lever to be positioned in a corresponding one of three positions.

The lever 352 has a rearward extension which lies under a stud 385 in one arm 38! (Figs. 10 and 14) of a yoke pivoted an "stud 388, which extends from the inside or the side frame '51. The arm 38'! extends through asui'ta'ble opening in the side frame 5!, and its forward end is urged downwardly by a spring 389, which is effective, through the engagement for the stud 385 with the rearward extension or the lever 352, to maintain the control surface at the front or the lever 35-2 in engagement with the stud 35! on the totalizer selecting lever3 50.

The other arm 39!) (Figs. 10 and 14) of the yoke has therein a slot 39!, into which extends a stud carriedby a lever 393 pivoted at its front end on a stud 69 i extending from the usual right printer frame 395-, a portion of whichisshown in Fig. 10. The rear end of the lever '393 is bi furcated and engages a stud 395 on the side of the type bar 385.

Type elements bearing the digits 1, f2 and 3 are located on type bar 385 with the digit 1 above the digit 2-and with the digit 3 below the digit 2.? When the lever 352 is positioned under control of the totalizer selecting lever 3-50, it will, through the yoke and the lever 3-93., cause the type bar to be moved up=or down to bring the proper type element in printing position, thereby enabling the proper digit to be printed to indica-te which totalizer has been selected for operation.

Total-taking control mechanism Ii -the instant inachine totals are taken the usual -ihahhr by causing the totalizer from which the total is being taken to be in engagement the racks of the various differentially o'p" 'rable means during their-movement in the first half of a machine ewe-of operation, so that the pi'hi'ohs of 'the totai-iz'er will be rotated "by the d-i'fier'entia lly operable means in a direction reverse to that in which they are rotated in recaving entnes during adding and subtracting operations. The various pinions will be rotated ll-iitil they reach their 'zeif o posit-ion, whena T3:- dial portion of their related transfer "carns will engage corresponding bent-over ears on the transfer levers to prevent further movement of the pinions and the differentially operable means with which they are engaged. As a result of this operation, the total will be cleared from the totalizer and the differentially operable means will be set according to the total, positioning the type bars so that this total can be printed.

Because the instant machine is provided with three totalizers, it is necessary that the totalizer selecting mechanism cooperate with the totaltaking control mechanism to cause any one of the totalizers, but only the selected one, to be in engagement with the differentially operable means as they are moved during the first half of a machine cycle to insure that these means will be set correctly to represent the total.

The total-taking control mechanism of the instant machine is similar in many respects to that usually found in machines of the type in i which the invention is embodied, which mechanism, when operable, causes the several difierentially operable means to be released for operation, causes a cycle of operation to be initiated, and causes totalizer-engaging means to be controlled to cause a totalizer to be in engagement with the racks of the differentially operable forward movement to be cleared thereby and control the differential setting of the differentially operable means and to 11 be disengaged from the racks of the differentially Operable mean before they begin their return movement.

The total-taking control mechanism can also be operated is similar to a total-taking operation but in which restored therein.

The usual total lever 400 (Figs. 4, 9 and 14) is secured on a shaft 401, which extends across the machine and is journaled in the side frames The usual space stroke locking lever 402 (Figs. 4 and 14) cooperates with the total lever 400, in the manner explained fully in the United States patent to Peters, No. 1,646,105, to

To cause a total-taking operation to take place, the lever 400 is rocked clockwise (Fig. 9) to shift clockwise against the action of a spring 404 (Fig. 4).

When the bell crank 211 is rocked, it will pull a link 405 rearwardly. The link 405 is pivotally As the link is moved rearwardly by the operation of the total lever 400, the lever 406 is rocked counter-clockwise (Fig. 4), and a cam surface at the upper end of the lever will press on a roller 408 on a rearwardly-extending arm 409 of the key release bail 113 to rock the bail. The bail H3 has of the stop bars erable means for operation, as fully shown and to cause a sub-total operation which described in the United States patent to Fried, et al., No. 1,857,299, which issued May 10, 1932. As explained earlier herein, fingers on the bail 113 cooperate with the latching plates 114 to release any depressed keys upon the rocking of the bail. Accordingly, the operation of the bail, when the total lever is operated to cause a totaltaking operation to take place, will release any amount key which might have been depressed and will free the various differentially operable means for operation during the total-taking operation.

When the link 485 is pulled rearwardly, a stud 410 (Fig. 4) thereon, cooperating with the bifurcated lower end of a bell crank 41 1, will cause the bell crank 411 to rock about the stud 412 extending inwardly from the side frame 5|.

As the bell crank 411 is rocked, a forwardlyextending finger 418 thereon will move below a flange 419 on the non-add and total lever latch 502. This movement of the bell crank 40'! will also cause a stud 413 1816011 to engage a latchretaining plate 414 and the flange and allow a spring 515 to rock the latch 102. The latch 102, when thus rocked, moves the flange 419 over the finger 418 on the bell crank 411, thereby retaining the bell crank 41 1 and the total lever 400, connected thereto, in their moved positions. The latch 162 will retain these parts in their moved positions until the usual roller 416 (Fig. 3) on the full stroke sector 72 engages the by-pass pawl 4i? (Fig. 4) on the latch 102 soon after the beginning of the return stroke of the sector '12, and rocks the latch 1&2 clockwise (Fig. 4) to move the flange em out of latching relation with the A counter-clockwise movement (Fig. 4) of the total lever 490 will cause a sub-total operation on the total lever 4530 engages the usual three armed lever 492 to rock The controls for the #1 totalizer engaging means will be considered first.

It will be recalled that when the totalizer selecting mechanism is set for the selection of the #1 totalizer, the stud 35! on the totalizer selecting lever 35!) will be opposite the low portion of the control surface at the front of lever 353. and the spring 35'! will rock the lever 353 clock wise a slight extent, from the position shown in Fig. '7. In this clockwise position the stud 285 has moved out of cooperative relation with the pawl 264 and the lever 269 remains coupled to the cam lever 253 during the second half of a machinecycle. Also, in this clockwise position of the lever 353, a rearward extension thereon will move downwardly away from a stud 525 on a lever 426 pivoted on a stud 42'! on the outside of the side frame and will allow the lever 426 to make a slight counter-clockwise movement.

The lever 426 is formed with a bent over portion 428 which extends through a suitable opening in the side frame and behind a stud 429 on a lever 430 pivoted on the stud 213. When the lever 26 is rocked counter-clockwise, the bent over portion 428 will move to the rear of the machine sufficiently to allow the lever 430 to be rocked clockwise (Fig. 7).

The lever 43!) has an edge 43! on a forwardlyextending portion thereof which overlies the roller 215 on the pitman 2' and which holds pitman 2H in engagement with stud 219 while totals are being taken in the #2 and #3 totalizers, as will become apparent.

When the bell crank 2'11 (Fig. 9) is rocked by the total lever 480, the upwardly-extending arm 216 moves away from the stud 215 on the pitman 211 and the spring 214 will raise the forward end of the pitman to remove the notch therein from engagement with the stud 210 on the lever 260 before the pitman is given its forward movement.

Since the totalizer selecting mechanism is set to select the #1 totalizer, the lever 438 will not prevent the disconnection of the pitman 2-1! from the lever 25.0 but will be rocked clockwise by the roller 215 as the forward end of the pitman 2?! is raised by the spring 214.

With the pitman thus disconnected from the lever 2.6.0, the #1 totalizer will not be shifted out of engagement with the racks of the differentially operable means and will be restored to zero thereby to control the setting of the differentially operable means according to the total during the first half of a machine cycle of operation as is customary in total-taking operations,

As the pitman 2H reaches its farthest extent of forward movement a notch 435 in an extension thereof (Figs. 7 and 9) will engage .a stud 435 (Fig. 9) on the upper end of the lever 255, and the return movement of the pit-man will rock the lever 260 and the cam lever 253 coupled thereto, clockwise (Fig. '7), to cause the zeroized totalizer to be disengaged from the racks of the differentially operable means before the racks begin their return movement in the second half of a machine cycle of operation.

The finger 285 (Fig. '7) loose on the main shaft 13 will be operated to rock the cam plate 253 near the end of the machine cycle, as explained earlier herein, and will thereby cause the zeroized totalizer pinions to engage the racks after the racks have completed their return movement.

The above control of the totalizer engaging means for the #1 totalizer will be effective in all total-taking operations in which the #1 totalizer is selected for operation. When either the #2 or #3 totalizer has been selected for operation, the stud 35! on the totalizer-selecting lever 35% will be opposite the higher portion of the control surface on the lever 353, as shown in Fig. 7, and the lever 353 will have been rocked counterclockwise from its #1 totalizer-selecting position to the position shown. With the lever 353 in this position, the stud 285 will have moved forward into position to cooperate with the pawl 25% and uncouple the lever 250 from the cam lever 253 near the end of the first half of a machine cycle of operation, and the rearward extension of the lever 353 will have moved upward and will have positioned the lever 426 with its bent over portion 428 immediately behind the stud 425 on the lever 43!) to block any substantial clockwise movement of the pitman 21 I.

When either the #2 or the #3 totalizer is se lected for operation and the total lever .559 rocks the total control bell crank 2'l'i to move the arm 215 from engagement with the roller 2'15, the lever 430, being blocked against movement, will, through its engagement with the roller 215, block the raising of the forward end of the pitman 2 by the spring 214 and will cause the notch in the pitman to remain in engagement with the stud 2'!!! on the lever 2%.

Since the notch in the pitman remains in engagement with the stud 2%, the forwardmovement of the pitinan will rock the lever 268 and cam lever 253 to disengage the totalizer pinions from the racks before the racks begin their forward movement, and since the lever 26% is uncoupled from the cam lever 253 near the end of the first half of a machine cycle, thereby preventing the return movement of'the pitman from rocking the cam lever 253 to cause the engage! merit of the totalizer pinions with the racks before the racks make their-return movement. Therefore the #1 totalizer will remain out of engagement with the racks during total-taking operations when either the #2 or #3 totalizer is selected for operation and its setting will not be affected.

The controls for taking a sub-total from the #1 totalizer are substantially the same as above, but when the total lever lillil is rocked counterclockwise (Fig. 9) and shifts the link M3 to operate the total control bell'crank 2H and the slide 405 and associated parts the same as in a totaltaking operation, it moves the upper end of the link 1333 rearwardly. The rearward movement of link 5-93 positions a roller i3 5 thereon in the path of the pitman 21! to limit its upward movement so the notch 435 Will not engage he stud 43.6 on the lever 266. This will prevent the pitman from causing the #1 totalizer from being disengaged from the racks of the differentially operable means during the return movement of the differentially operable means. The totalizer accordingly will remain in mesh with the racks in both these forward and return movements as is necessary in a sub-total taking operation.

, The controls for the #3 totalizer engaging means in a total-taking operation are similar to those for the #1 totalizer.

When the totalizer selecting mechanism is set for the selection of the #3 totalizer, the stud 3.5I on the totalizer selecting lever 355 will be opposite the low portion .of the control surface at the front of lever 355 (Fig. 11) and the spring 365 t r u h the link 35!), rock the lever clockwise a slight extent from he po i i n s wn in Fig. 11. This movement of the lever 35A and link 36!] will allow the bell crank 362 to rock clockwise 

